Day 28: RegEx, Patterns, and Intro to Databases

https://www.hackerrank.com/challenges/30-regex-patterns/problem

<?php
$stdin = fopen("php://stdin", "r");

fscanf($stdin, "%d\n", $N);

$arr = [];
$cnt = 0;
for ($N_itr = 0; $N_itr < $N; $N_itr++) {
    fscanf($stdin, "%[^\n]", $firstNameEmailID_temp);
    $firstNameEmailID = explode(' ', $firstNameEmailID_temp);

    $firstName = $firstNameEmailID[0];

    $emailID = $firstNameEmailID[1];

    $email = explode('@', $emailID);

    if($email[1] == 'gmail.com'){
        $arr[$cnt] = $firstName;
        $cnt++;
    }
}

sort($arr);
for($i=0; $i<count($arr); $i++){
    echo $arr[$i]."\n";
}

fclose($stdin);